Hoist-trolley.



C. S. WILLIAMSON. I

HOIST THOLLEY.

APPLICATION FILED Ammo. 1912.

Patented July 27, 1915.

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0. s. WILLIAMSON.

'HOIST THOLLEY-. APPLICATION FILED APR.20, 19I2.

Patented July 27, 1915 3 SHEETS-SHEET 2- mums PZIKIS, mm, mm. WASHINGWNI o. c.

C. S. WILLIAMSON.

- HOIST TROLLEY. APPLICATION HLED APR.20. 1912. 1,143,482. Patented July 27, 1915.

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cnAnLEs vWILLIAIVISON,.011" cnr'caeo, .IIJLINOIIS,'AI.SSIGII\TOIB, on ons-nature ivman- EBA'IION or MAINE.

To all whom it may concern;

Be it known that 1, CHARLES S. WILLIAM- SON, ta citizen-of the United States, residing at,Chicago, county of. Cook, and State of Illinois, have invented new and useful Improvements in Hoist-Trolleys, of which the following is a specification. 'Itis the object of the present invention to provide-means for hoisting and conveying coal and like materials by means of a power driven trolley of novel form. suspended or slung below the rails or frame=work-where- 'on the Weight of the trolley and its load is carried. The structure is preferably so arranged that the operator is housed on the carriage and moves with it during the conveyance of a load from one point to another along the supporting structure.

. The details of my invention will be better understood. by reference to' the accompanyin'g drawings forming a part'of this speci fication,.wl1erein- Figure 1 is a side elevation of the hoist trolley. Fig. 2 is an end elevation of the same showing part of the supporting structure.

Fig.-3 is a plan view of one of the I trucks from which the trolley is slung. Fig.

'lis a side elevation of a coal storage shed equipped with a movable partition. Fig. 5 is a transverse elevation of the storage shed shown in Fig. 4, illustrating a plurality of their respective supporting columns.

In the construction as shown in Fig. 1, the trolley comprises a grab bucket 1 of usual construction supported and actuated 'in' normal manner by a holding v rope 2 and parallel. track-ways, all cantalivered from an opening or closing rope 3,".these ropes passing over the usual-drums and being actuated by their respective gears 4: and 5 driven in suitable manner by anelectric motor 6, acontroller 7 for which is located in a cab secured to other parts of the movable structure and traveling therewith. An operator located in the cab has at his command a series of links. 8 and bell cranks, through the agency of which the release or other control of the rope drums may be effected.

All of the elements above enumerated are carried on aplatform comprising side g1rders 9 resiliently mounted onhelically coiled springs 10. Projecting from the inner face of the girders 9 are laterally ex-' tending lugs 10 which are adapted to .rest

upon the opposite faces of the frames or a HoIs'r rRoLLnY. Y

slings 12. to take up any'late'ral strain ex} fMoRnIsoN' mawmc mm COMPANY, or BOSTON, massaonusn'rrs, A coaro- I Specification of Letters ;l3atent.' I Patefited July 21,1915,- I Application filed Apr'i120, 1912. s rial No. 692,664.

erted on the springs 10 during the opera- 7 tion of the trolley. Thesesprings are seat ed on a' shoulder or flange 11 at the lower edge of the 'frames orislings 12, by which the trolley is suspended from its trucks. There are two of the frames 12, one at the front and one at the rear of the rope drums, and each of these is suspended from a truck 'havinga pair of track wheels 13 and 14 driven by a motor 15 through suitable reduction gearing. Each frame 12 is cut .away. at its side portion as at 16 to give.

clearance for the supporting structure, and each side plate'of the frame is reinforced .by a heavy plate 16 riveted in place and having a slot for receiving the lower flange of an I-beam 17 The r a1l 18, on which the trucks travel, is carried'on the upper flange of the I-beam 17, and the latter is preferably secured to the outer or free end ofa cross-brace or glrder 19 carrled at the top of. a vertical column 20 and stiifenedby a knee brace 21 provided with a suitable gusset plate 22; A stiffening girder 23 can also advantageously; be. interposed between. the I-beam and the rail and secured to the cross-beam 19 tofltake the side slap of the beam when the load is I not by'the roof of the structure.

The reinforcing plates 16 are in position .to engage the lower'flange of the I-beam 17 in case of breakage or failure at or near the supporting truckg'thereby affording a measf me of protection to the operator, who ordinarily is located in the cab and travels backward and forward along the track with the trolley. The coiled springs 10, whereon the entire hoisting mechanism is resiliently supported, serve to-protect the suspended frames and their trucks from unduelshock or strain during the loading andunloading for driving the motors of the buckets.

.Electrical energy is supplied through a trolley wire 25 .car.

ried on insulators supported from th e'diagonal braces 21 1 or in other suitable manner.

One advantage of the cantalivered trackway and the suspended man trolley, resides in the flexibility of the system when used in a large plant, as illustrated somewhat diagrammatically in Figs. 4, and 5.

Fig. fl shows a coal storage shed 26 having supporting columns 20 carrying a cantalivered track-way 18, this shed being equipped at the wharf end with an unloading tower 27 movable along a track-way 28 so that the grab bucketl and its supporting hoist mechanism can be used on anyone of the several cantalive'red track-ways with which the storage shed 26 is equipped (see Fig. 5). The suspended frame and its hoisting gear and bucket are so closely associated or so nearly self-contained that operation of the trolley by a man housed in the trolly cab is in a large measure independent of any outside connections, such as cables or hoisting engines, it being only necessary that the of said trucks, the lower ends of said supports being enlarged, lateral projections formed-upon the opposite sides of the supports adjacent to the lower extremities thereof, coil springs mounted upon said lateral projections, a pair of girders supported upon said springs, lugs projecting laterally from the inner face of said girders and adapted to move upon the opposite faces of said supports to take up any lateral strain, and a platform carried by said girders for the purpose specified.

3. In a device of the character described, the combination of a pair of spaced two wheeled trucks, supports connected to the center of said trucks at one side thereof and depending therefrom, the lower ends of said supports being enlarged and extending equidistant on each side of the vertical center of the said trucks, lateral projections carried by the lower ends of said supports, coil springs mounted upon said projections, girders yieldingly supported upon said coil springs, lug projections carried by the girders and adapted to travel upon said supports to form guide ways for the girders,

and a platform carried by the girders for" the purpose specified.

In witness whereof, I hereunto subscribe my name to this specification in the presence.

of two witnesses.

CHARLES S. WILLIAMSON. Witnesses: v

C. C. Bnooxs,

TOM V. BOWERS. 

